Head mounted display device



FIG. 1 is a perspective view of a head mounted display device showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof;

FIG. 8 is a left side view thereof, showing the display portion of the article in broken lines and in an alternate position of use;

FIG. 9 is a left side view thereof showing the article in a position of use; and,

FIG. 10 is a front view thereof, but with a portion of the article shown as transparent.

The broken lines are just for illustrative purposes only and form no part of the claimed design. 

CLAIM The ornamental design for a head mounted display device, as shown and described. 